Well lets see...
Formula/Trans Am - 310hp
Formula/Trans Am Ws6 - 325
Formula/Trans Am Firehawk -335/345
The Firehawks started out as Formulas in the beginning with only a few being made and after that, theyve been limited produced under SLP and in 2001 the tenth anniversary Hawk came out which was only in black with gold stripes, wheels, and exhaust tip. You can get more info on them at
http://www.firehawk.org
The Ws6 were also produced by SLP up untill 98 when they started being produced by ASC.
Ive personally see them both dyno somewhere along the lines of 300-310 for an A4 and 310-320 for M6 stock.
Hope this helped